It is confusing when you want to login as a tenant or user. The login url show "long to Pbx" "long to Recording" "login to Sonata" "login to Billing" etc....
Why show all these login option? a user that wants to login to the user portal gets confused. These other options should be available when you login to the pbx as drop-down options or buttons you can click on.
Also, all these modules have usernames and passwords, if you are logged in as ADMIN it shouldn't ask you to create new username and password again, It is better as single sign on
To disable the login panel, you may go to "Settings >> PBX Settings >> System General", and disable the option "Show Login Panel", and then save.